It seemed like an easy assignment: Escort a vital mob witness to the trial by way of an aeroplane. But FBI Special Agent Nelville Flynn (Samuel L. Jackson) doesn't count on an assassin smuggling scores of deadly serpents on board, and unleashing them upon the hapless passengers and crew, midair. Coming across like a mixture of AIRPORT and ANNACONDA, SNAKES ON A PLANE blends aerial high jinks with reptilian threat.